Hood-cap for outside metal car-roofs.



D. MURPHY. HOOD GAP FOR OUTSIDE'METAL OAR HOOPS.

APPLICATION FILED MAY 23, 1913.

coyumum I'LANOGRAPII cu, WASHING lllllll c4 DWIGHT MURPHY, OF PITTSBURGH, PENNSYLVANIA.

HOOD-CAP FOR OUTSIDE METAL CAR-ROOFS.

Specification of Letters Patent.

Application filed May 23, 1913.

Patented Dec. 16, 1913. Serial No. 769,377.

To aZZ RU/Twit it may concern Be it known that I, DwioI-rr MURPHY, a citizen of the United States, and a resident of the city of Pittsburgh, county of Allegheny, and State of Pennsylvania, have invented a new and useful Improvement in Hood-Caps for Outside Metal Car-Roofs, of which the following is a specification.

This invention relates to means for covering the open ends of the slandii'lg seams connecting the roof sheets of outside inetal car roofs and for securing the eaves corners of the roof sheets upon the roof substructure. lileretofore, malleable iron castings have been used to cover the open ends of the seams and to secure the eaves corners of the roof sheets upon the substructure, but a cast iron hood cap as heretofore made is objectionable for the reason that its lower surface, which is rough and uneven, comes in contact with the roof sheets. The continual move ment of the roof sheets on the roof substructure when the car is in motion causes incessant rubbing contact between the corncrs of the roof sheets and such hood caps. and results in wearing the galvanizing otl thecorners of the sheets so that these are the first places to rust out and fracture.

The object of this invention is to prolong the life of the roof sheets by overcoming the tendency of metal hood caps to wear out their corners. In carrying out this object the hood cap is provided with means for spacing it above the corners of the roof sheets in such a way that the latter cannot come in contact therewith. Furthermore, the hood cap is made of sheet metal which has a smooth surface not likely to wear the galvanizing oil the roof sheets. The sheet metal hood cap also has a certain amount of resiliency enabling it to spring or give slightly in response to distortion of the roof substructure.

Further objects of the invention relate to the manner of forming the sheet metal hood cap shown in the accompanying draw ings, and to the details of construction thereof.

The novel features of the invention appear more fully in connection with the following description thereof, and the essential features are defined with particularity in the appended claims.

in the drawings in which like characters designate like parts in the several views,- Figure l is a vertical transverse section through the caves of a car embodying my invention, showing a hood cap in side elevation; and Fig. 2 is a top view; Fig. 3 a longitudinal section and Fig. 4: a side elevation, of the hood cap.

Referring to the drawings, in Fig. 1 the hood cap 11 is illustrated as applied to a car roof similar to that shown .inPatent No. 1,039A01, although the invention is applicable to outside metal car roofs of other forms than the one shown in said patent. Preferably, however, the roof sheathing 12 is nailed crosswise on the top of the car, and the cares ends of the boards rest directly upon the sidcplatc l3 and project out\ ardly beyond it, covering the tops of the side sheathing 14k and top of the fascia board 15. A shallow rahhet 1.6 is cut in the top side of the eaves ends of the roof boards within which the interlocked rebent ends l7, 18 of the roof sheets 19 and flashing strip 20 lie. The flashing strip is bent down over the eaves to cover the joint between the roof boards and the fascia board, and is nailed to the latter. Hood caps are securely fastened on the fascia board outside of the flashing strip by means ofbolts 21 and nails 22 or other securing means. These hood caps are placed over the ends of the stand ing seams 28 or joints connecting the roof sheets,and they limit the vertical increment ofthe roof sheetsat these points.

The hood caphas a hood portion 24 which is wider than the standing seams between the roof sheets, but its "15 slightly less vthan the height of the seam inside vertical dimension above the roof sheets. The side walls 25 of the hood portion terminate in laterally extending flanges 26 which are slightly roui'uled on their under sides. The end wall 27 of the hood portion is extended down ward and widened to form a connecting plate 28 between the hood portion and the base portion 29 which is secured to the side of the car. Stiti'ening ribs b0 are formed in the lateral flanges 26 and in the connecting plate and base portion, and these ribs are continued around the angle between the lateral flanges and connecting plate to brace and strengthen the hood cap in the angle.

The connecting plate below the end wall i sheared or punched out on three sides to form an opening 31 and the metal punched out is bent inwardly to form a projecting ledge or shelf beneath the hood portion. This shelf is spaced below the underside of the top of the hood portion at such a distance that when the hood cap is arranged on the roof over the end of a seam, with the ledge in contact with the eaves board, a slight space is left between the top of the seam and the underside of the hood. A slightly greater space is left between the lateral flanges 26 and the roof sheets than between the top of the seam and underside of the hood portion, so that in case the sheets rise ofl the roof the top of the seam will come in contact with the hood cap before the corners of the sheets come in contact with the underside of the flanges. Consequently, there can be no rubbing between the underside of the hood cap and the corners of the sheets.

In case the standing seam becomes mashed down to'such an extent that the hood cap flanges contact with the roof sheet corners, there is less likelihood of wearing ofi the galvanizing from the sheets than would be the case if the hood cap were made of malleable iron, because the surface of the sheet metal hood cap is smoother than the malleable iron hood cap. The spacing ledge or shelf 82 is made long enough to provide a good bearing lengthwise of the eaves in order that there may be no pivoting or tilting of the hood cap upon the bolt 21, which would result in bringing one or the other of the lateral flanges into contact with the roof sheets.

Above the bolt hole 33 in the base portion of the hood cap the sheet metal is pressed outwardly in the form of a crescent 3a in order to deflect any water which may trickle down the outside of the hood cap and preventits passing through the bolt hole and thus into the car. The metal surrounding the bolt hole is bossed outwardly to form a spring seat 35 for the bolt head.

Although the hood cap shown is the preferred form of the device, this invention is not restricted thereto; and the invention is i type of outnot restricted to the particular seam shown side roof or form of standing in the drawing.

I claim as my invention:

1. A sheet metal hood cap having a base portion provided with an opening for a securing member, the metal surrounding said opening being spaced above and at an angle to the plane of said base portion to form a spring seat for said securing member, the high side of said spring seat being toward the hood and the metal immediately adjacent thereto at the side thereof toward said hood being pressed up to form a watershed for said opening.

2. A hood cap for a car roof comprising metal roof sheets joined by raised seams terminating short of the eaves, said cap havin a hood portion adapted to span a seam and close its open end and a base portion adapted to be secured to the side of the car, said base portion being provided with an inwardly projecting shelf adapted to bear upon the top of the car, between the end of a hollow seam and the eaves, said shelf being of a length not less than the width of the hollow seam with which it is adapted to cooperate.

3. A hood cap for a car roof comprising metal roof sheets joined by raised seams, said cap having a hood portion adapted to span a seam and a base portion adapted to be secured to the side of the car, said hood portion having lateral flanges spaced below its top a distance slightly less than the heightof said raised seams, and said base portion being provided with an inwardly projecting shelf adapted to bear upon the top of the car, said shelf being spaced below the plane of the lower faces of said flanges.

Signed at New Kensington, Pa, this 19th day of May, 1913.

DXVIGHT MURPHX.

W itnesses 1 A. A. FRANK, J. E. \VILL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

